GSI certificate - Gemological Science International certified

Gemological Science International, or GSI, is an independent gemological organization that is one of the largest gemological entities in the world, with offices in four continents.Founded in New York City in 2005 by Mark Gershburg and Debbie Azar, GSI's laboratory division provides diamond and gemstone grading and identification services as well as

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Advanced IMG Info Guide: Model - Devon Windsor

Victoria's Secret model Devon Windsor - IMG modelsDevon Windsor (born March 7, 1994) is an American model. St. Louis, Missouri native Devon Windsor received her big break during the Spring 2014 season, appearing in over twenty international collections, including Prada, Chanel, and Christian Dior. She has also walked the runway for over 50 fashion

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